package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.entity.UserInfo;
import com.atguigu.lease.model.enums.BaseEnum;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.mapper.SystemUserMapper;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.wf.captcha.SpecCaptcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private StringRedisTemplate redisTemplate;
    @Autowired
    private SystemUserMapper systemUserMapper;

    @Override
    public CaptchaVo getCaptcha() {

        // 验证码图片信息 字符串
        // key 生成redis的key
        // 1. 设置图片样式
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 5);
        String verCode = specCaptcha.text().toLowerCase();
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();
        // specCaptcha.toBase64() 把样式api转化为图形 即验证码
        redisTemplate.opsForValue().set(key, verCode, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        CaptchaVo captchaVo = new CaptchaVo(specCaptcha.toBase64(), key);
        return captchaVo;
    }


    @Override
    public String login(LoginVo loginVo) {
        // 完成登录验证
        // 1. 图形化验证码
        String captchaCode = loginVo.getCaptchaCode();
        // 不为空
        if (!StringUtils.hasText(captchaCode)) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        // 获取redis中的验证码 比较验证码是否正确
        String redisCode = redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        // rediscode是否为空 //查不到说明验证码过期
        if(!StringUtils.hasText(redisCode)){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        if(!redisCode.equals(captchaCode)){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        // 2. 账号查询数据库信息
        SystemUser systemUser = systemUserMapper.selectOne(new LambdaQueryWrapper<SystemUser>().eq(SystemUser::getUsername, loginVo.getUsername()));
        if(systemUser==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        // 判断账号是否被禁用
        if(systemUser.getStatus()== BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }
        if(!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        // 账号 密码 验证码 都准确 完成登录 生成token 返回给前端进行存储
        String token = JwtUtil.createToken(systemUser.getUsername(),systemUser.getId());

        return token;
    }
}
